An unusual regioselectivity in the Pd-ca
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Barry M Trost; Janet L Gunzner; Tatsuro Yasukata
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Article
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2001
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Elsevier Science
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French
โ 121 KB
Palladium catalyzed additions of terminal alkynes to alkynoates can lead from preferential to exclusive C C bond formation at the a-carbon and, in the case of ethyl 3-dimethylphenylsilylpropiolate, complete selectivity for a-attack, an unprecedented regioselectivity that requires revision of the ear